Now set for a Wednesday, August 9 premiere, Mr. Mercedes released a first full trailer featuring Penny Dreadful star Harry Treadaway (replacing Yelchin) in the main role, along with stars Brendan Gleeson, Holland Taylor and Mary-Louise Parker. The David E. Kelley series will run for ten full hours, with a synopsis below:

“Mr. Mercedes” follows a demented killer Brady Hartsfield (Treadaway) who taunts a retired police detective Bill Hodges (Gleeson) with a series of lurid letters and emails, forcing the ex-cop to undertake a private, and potentially felonious, crusade to bring the killer to justice before he is able to strike again.